India's electric vehicle transition is accelerating faster than its semiconductor supply chain can support. According to NITI Aayog's EV Mission Report, India aims for 30% EV penetration across all vehicle categories by 2030 — which, extrapolated across projected sales volumes, translates to demand for approximately 180 million power semiconductor units annually. The critical materials enabling this transition — Gallium Nitride (GaN) and Silicon Carbide (SiC) — are wide bandgap semiconductors that currently depend almost entirely on foreign fabrication.

Why Wide Bandgap Matters for EVs

Conventional silicon MOSFETs and IGBTs have dominated power electronics for decades, but they face fundamental physical limitations at the voltages (400V–800V) and switching frequencies now standard in EV powertrains. Wide bandgap materials — GaN (bandgap: 3.4 eV) and SiC (bandgap: 3.3 eV) — operate efficiently at these higher parameters because:

1. Higher breakdown voltage: SiC handles 10× the electric field of silicon
2. Lower switching losses: GaN switches at frequencies exceeding 1 MHz with minimal heat
3. Higher temperature operation: SiC remains stable at junction temperatures up to 600°C
4. Smaller form factor: 4× reduction in device area for equivalent power rating

According to Yole Intelligence's Power Semiconductor Market Monitor 2025, the global SiC market is projected to grow from $2.5B in 2023 to $16.1B by 2029 — a CAGR of 36%. India, currently a net importer, risks becoming structurally dependent on Chinese and European SiC suppliers unless domestic fabrication capacity is established.

INDNIX's Compound Semiconductor Response

Building 2 of INDNIX's Haringhata complex is designed as a dedicated III-V and wide bandgap compound semiconductor cleanroom. Key capabilities planned include:

• SiC epitaxial growth (4-inch and 6-inch wafers) for MOSFET and Schottky diode fabrication
• GaN-on-SiC process for RF power amplifiers and EV inverter switches
• GaN-on-Si for lower-cost consumer power conversion
• InP and GaAs processes for 5G and optical communications

This positions INDNIX as one of only a handful of Indian entities with the planned capability to fabricate compound semiconductors domestically — directly addressing the supply chain vulnerability that IESA (India Electronics & Semiconductor Association) has flagged as the single greatest risk to India's EV manufacturing ambitions.

The Automotive Quality Imperative

Power semiconductors for automotive applications must meet AEC-Q101 (for discrete components) or AEC-Q100 (for ICs) qualification standards — rigorous testing regimes covering high-temperature reverse bias (HTRB), temperature humidity bias (THB), and autoclave testing. INDNIX's quality systems are being designed to achieve and maintain AEC-Q101 qualification from initial production ramp.